Numerical simulation of the instability of an ion beam

We consider a numerical model of the instability of an ion beam. The energy of the oscillations is concentrated mainly in several neighboring modes that have a maximum increment in the linear theory. The instability has been traced up to the complete vanishing of the beam.Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 5, pp. 165–168, September–October, 1971.The authors thank R. Z. Sagdeev for interest in the work and I. K. Konkasbaev for useful discussions.